Open AccessEhrenstein illusion
Author(s) -
Birgitta Dresp
Publication year - 2009
Publication title -
scholarpedia
Language(s) - English
Resource type - Journals
ISSN - 1941-6016
DOI - 10.4249/scholarpedia.5364
Subject(s) - illusion , optical illusion , contrast (vision) , illusory contours , perception , brightness , psychology , cognitive psychology , artificial intelligence , optics , computer science , physics , neuroscience
International audienceThe original Ehrenstein illusion was first described by Walter Ehrenstein senior (Ehrenstein, 1941, 1954). It is generated by a configuration of four line segments which induce the perception of a so-called illusory figure at the centre of the configuration (Fig 1a). This illusion is part of a class of visual perceptual phenomena referred to as contrast or brightness illusions, as explained in detail in this state-of-the-art review
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